Abstract: A stereoscopic imaging method includes: acquiring a convergence disparity value, which corresponds to a screen position at which a viewer is looking, from an original disparity map corresponding to first and second images that correspond to different viewing angles; generating a disparity transformation model based on the convergence disparity value and viewer-related information; transforming the original disparity map into a transformed disparity map based on the disparity transformation model; and synthesizing the first and second images into a stereoscopic image based on the transformed disparity map.

Abstract: A stereoscopic imaging method includes: acquiring a convergence disparity value, which corresponds to a screen position at which a viewer is looking, from an original disparity map corresponding to first and second images that correspond to different viewing angles; generating a disparity transformation model based on the convergence disparity value and viewer-related information; transforming the original disparity map into a transformed disparity map based on the disparity transformation model; and synthesizing the first and second images into a stereoscopic image based on the transformed disparity map.

Abstract: A stereoscopic image synthesis method includes the following: receiving a first image corresponding to a first view angle and a second image corresponding to a second view angle; obtaining a disparity map corresponding to the first image and the second image; determining a zero disparity region according to the disparity map; adjusting the disparity map according to the zero disparity region to obtain a shifted disparity map; linearly or non-linearly adjusting the shifted disparity map according to the shifted disparity map and a preset maximum range to obtain an adjusted disparity map; generating a plurality of virtual view angle images according to the adjusted disparity map, the first image, and the second image; and enhancing a two-dimensional depth cue of the virtual view angle images according to the adjusted disparity map.

Abstract: A stereoscopic image synthesis method includes the following: receiving a first image corresponding to a first view angle and a second image corresponding to a second view angle; obtaining a disparity map corresponding to the first image and the second image; determining a zero disparity region according to the disparity map; adjusting the disparity map according to the zero disparity region to obtain a shifted disparity map; linearly or non-linearly adjusting the shifted disparity map according to the shifted disparity map and a preset maximum range to obtain an adjusted disparity map; generating a plurality of virtual view angle images according to the adjusted disparity map, the first image, and the second image; and enhancing a two-dimensional depth cue of the virtual view angle images according to the adjusted disparity map.

Abstract: A touch display apparatus includes a display panel, a frame and a plurality of sensing modules. The frame is disposed around the display panel and a plurality of apertures is arranged on the frame. The sensing modules are disposed at different height levels respectively. Each sensing module generates sensing data. Each sensing module includes a plurality of sensing units. The sensing units are disposed along the frame respectively and sense light which passes through the apertures. A touch sensing method is also disclosed herein.

Abstract: A disparity estimation method of stereoscopic image is provided. A matching cost computation is executed for a first image and a second image, and one extreme value is selected from cost values corresponding to estimating disparities for each pixel to obtain a matching point corresponding to each pixel. And a matching disparity corresponding to each matching point is adjusted based on edge detection according to a scan order.

Abstract: A disparity estimation method of stereoscopic image is provided. A matching cost computation is executed for a first image and a second image, and one extreme value is selected from cost values corresponding to estimating disparities for each pixel to obtain a matching point corresponding to each pixel. And a matching disparity corresponding to each matching point is adjusted based on edge detection according to a scan order.

Abstract: A selective motion vector prediction method and a motion estimation method and a device thereof applicable to a scalable video coding (SVC) system are disclosed. The selective motion vector prediction method includes the steps of performing an inter prediction to obtain a first motion vector prediction center; performing an inter-layer motion prediction to obtain a second motion vector prediction center; in the case the first and the second motion vector prediction center satisfying a preset condition, using the same reference data to calculate the rate-distortion costs for the inter prediction and the inter-layer motion prediction; and using the rate-distortion costs as a basis to select one of the inter prediction and the inter-layer motion prediction for applying to the SVC system. Thus, the same reference data is shared to enable reduced memory access in the process of coding and accordingly, reduced cost of and power consumption by memory access.

Abstract: A method and an apparatus for constructing an image blur pyramid, and an image feature extracting circuit are disclosed. The image blur pyramid construction apparatus comprises a first image blur circuit, a second image blur circuit and an image sub-sampler. The first image blur circuit and the second image blur circuit simultaneously generate a first interval and a second interval in the same octave according to an input image, a first filter and a second filter. The dimension of the second filter is greater than that of the first filter. The image sub-sampler couples with the second image blur circuit and down samples the second interval to generate a sub-sample image.

Abstract: A method and device for decoding a scalable video signal utilizing an inter-layer prediction are provided herein. An inter-layer pre-fetch scheme (IPS) is presented to improve the performance for scalable video coding (SVC) decoder. With proposed invention, the required information for inter-layer prediction in SVC technique will be pre-fetched ahead when reconstructing the enhancement layer so that the cache miss rate can be reduced significantly. Accordingly, the execution time and memory energy consumptions can be improved.

Abstract: The present invention discloses the video coding method using image data skipping. Said method detects whether the encoded macro-block has to be skipped and terminated by a likelihood ratio test prior to mode decision. Therefore, the computation burden such as motion estimating and compensating can be properly eliminated. In one embodiment, the skipping likelihood ratio is composed of the encoded block and its predictions associated with the skipping displacement. While the decision threshold adapts according to the mode decision and detection statistics, the false detection and rate-distortion are substantially preserved.

Abstract: A context-based adaptive binary arithmetic coding (CABAC) decoding device and a coding method thereof are provided. The device comprises: a context memory address calculator, calculating an address identifying a memory location in a context model memory for storage of a context model in next cycle; a mixed context memory, in which the context model of the context memory address calculator is stored and from which the context model is read; a two-bin context adaptive binary arithmetic decoder, outputting several parameters for updating the range and offset of the context model, based on the context model of the mixed context memory and deciding several bins; and a binary syntax element comparator, judging whether a current binary sequence corresponds to the value of syntax elements, based on the bins so as to select a correct memory address.

Abstract: A context-based adaptive binary arithmetic coding (CABAC) decoding device and a coding method thereof are provided. The device comprises: a context memory address calculator, calculating an address identifying a memory location in a context model memory for storage of a context model in next cycle; a mixed context memory, in which the context model of the context memory address calculator is stored and from which the context model is read; a two-bin context adaptive binary arithmetic decoder, outputting several parameters for updating the range and offset of the context model, based on the context model of the mixed context memory and deciding several bins; and a binary syntax element comparator, judging whether a current binary sequence corresponds to the value of syntax elements, based on the bins so as to select a correct memory address.

Abstract: A selective motion vector prediction method and a motion estimation method and a device thereof applicable to a scalable video coding (SVC) system are disclosed. The selective motion vector prediction method includes the steps of performing an inter prediction to obtain a first motion vector prediction center; performing an inter-layer motion prediction to obtain a second motion vector prediction center; in the case the first and the second motion vector prediction center satisfying a preset condition, using the same reference data to calculate the rate-distortion costs for the inter prediction and the inter-layer motion prediction; and using the rate-distortion costs as a basis to select one of the inter prediction and the inter-layer motion prediction for applying to the SVC system. Thus, the same reference data is shared to enable reduced memory access in the process of coding and accordingly, reduced cost of and power consumption by memory access.

Abstract: The present invention discloses the video coding method using image data skipping. Said method detects whether the encoded macro-block has to be skipped and terminated by a likelihood ratio test prior to mode decision. Therefore, the computation burden such as motion estimating and compensating can be properly eliminated. In one embodiment, the skipping likelihood ratio is composed of the encoded block and its predictions associated with the skipping displacement. While the decision threshold adapts according to the mode decision and detection statistics, the false detection and rate-distortion are substantially preserved.

Abstract: A method for determining a search pattern for use in fractional motion estimation for video compression includes selecting a search center within a current macroblock; selecting a plurality of search points forming a half-pel search pattern surrounding the search center, and further selecting another search point at the search center; calculating a cost value for each search point according to a first cost function; and selecting a quarter-pel search pattern according to the cost values of at least two search points, the half-pel search pattern and the quarter-pel search pattern forming the search pattern. The search pattern is used in a matching process to determine a similarity of the current macroblock to a reference macroblock in a video undergoing compression.

Abstract: The present invention provides a context-aware frame memory scheme for motion compensation in video decoding, which utilizes a motion compensator to receive a data block from input video decoding, follow by processing both inputted context characteristic of residual block and motion vector respectively. The conception of technology is first based on the context characteristic of input video data decoding block, if there is no residual value and motion vector, it will be defined as “perfect match block”; otherwise, “non-perfect match block” instead. Then, the circuit architecture for memory accessing in video decoding provided by present invention will perform different memory access steps for the above mentioned two types of block.

Abstract: A method for selecting intra prediction mode includes: calculating an error value for each of the prediction modes in a first group, wherein the first group includes two prediction modes where an included angle between their prediction directions is the largest; calculating an error value for each of the prediction modes in a second group, wherein the prediction modes in the second group refer to the prediction modes with prediction directions near the two sides of the prediction direction of the prediction mode with smaller error value in the first group; calculating an error value for the prediction mode in a third group, wherein the prediction mode in the third group is the prediction mode with prediction direction adjacent to the prediction direction of the prediction mode with smaller error value in the second group; calculating a DC prediction mode in the plurality of prediction modes; and among the prediction modes with calculated error values, selecting a prediction mode with a smallest error value to

Abstract: A deblocking filtering method used on video encoding/decoding includes: sequentially reading the subblocks adjacent to a vertical edge according to a deblocking direction, and performing a deblocking process on the vertical edge; performing a transposition on the pixel data of a current subblock; performing the deblocking process on a parallel edge of the current subblock, and outputting the pixel data of another subblock adjacent to the parallel edge after transposition; sequentially storing a plurality of current subblocks; transposing and outputting the pixel data of the plurality of current subblocks after completion of the deblocking of the current macroblock.